Grandstream Networks HT813 Administration Manual page 44

Enable RTCP Allows users to enable RTCP. Default setting is Yes.
Remove OBP
Removes outbound proxy info in "Route" header when sending SIP packets.
from Route
Header Default is No.
Support SIP Includes "SIP Instance ID" attribute to "Contact" header in REGISTER request as defined in IETF SIP
Instance ID outbound draft. Default is No.
Validate
Incoming SIP Validates incoming messages. Default is No.
Message
Check SIP
User ID for Checks SIP User ID in the Request URI of incoming INVITE; if it does not match the HT813 SIP User ID, the
Incoming call will be rejected. Direct IP calling will also be disabled. Default is No.
INVITE
Authenticate
Incoming Challenges the incoming INVITE for authentication with SIP 401 Unauthorized message. Default is No.
INVITE
Authenticate
Configures whether to validate the domain certificate when download the firmware/config file. If it is set
server
to "Yes", the phone will download the firmware/config file only from the legitimate server. The default
certificate
setting is "No".
domain
Authenticate
Configures whether to validate the server certificate when download the firmware/config file. If it is set to
server
"Yes", the phone will download the firmware/config file only from the legitimate server. The default setting
certificate
is "No".
chain
Trusted CA Uses the certificate for Authentication if "Check Domain Certificates" is set to "Yes" under "Account"��"SIP
Certificates Settings".
Allow
Incoming SIP
Checks SIP address of the Request URI in the incoming SIP message; if it does not match the SIP server
Messages
address of the account, the call will be rejected. Default is No.
from SIP
Proxy Only
Determines if the "Privacy header" will be presented in the SIP INVITE message and if it includes the caller
Use Privacy
info in this header. If set to Default, it will add Privacy header unless special feature is Telkom SA or
Header
CBCOM. Default is Default.
Specifies if the P-Preferred-Identity Header will be presented in the SIP INVITE message. If set to "default",
Use P-
the P-Preferred-Identity Header will be omitted in SIP INVITE message when Telkom SA or CBCO is active.
Preferred-
If set to "Yes", the P-Preferred-Identity Header will always be presented. If set to "No", it will be omitted.
Identity
Header
Default setting is: Default.
Use P-Access-
With this feature enabled, device will populate the WAN access node with IEEE802.11a, IEEE-802.11b in P-
Network-Info
Access-Network-Info SIP header.
Header